Grey hair a sign of good health?

London: Stop getting annoyed by that patch of grey hair on your scalp, as a new study has found that it could be a sign of healthy body.      Spanish scientists, who studied wild boars, found that having grey hair and a rather grizzled look could actually be a sign that you have a long and healthy life ahead of you, the 'Daily Mail' reported.      Scientists said gray hair, which results from absence of melanin, seemed to be a mark of good health in wild boars "As with human hair, wild boars show hair graying all across their body fur," he said. "But we found that boars showing hair graying were actually those in prime condition," he said.      Scientists said that being a redhead could make one more susceptible to illness, an observation found in wild boar populations. PTI BLESSING IN DISGUISE